Gas and liquid contact apparatus



March 5, 1929. v F. SLATER 1,704,518

GAS AND LIQUID CONTACT APPARATUS Filed April 50, 1926 v 6 Sheets-Sheet l March 5, 1929. w. F. SLATER GAS AND LIQUID CONTACT APPARATUS 6 Sheets-Sheet 2 Filed April 30, 1926 any.

March 5, 1929. w, SLATER 1,704,518

GAS AND LIQUID CONTACT APPARATUS Filed April 30, 1926 6 Sheets-Sheet 5 March 5, 1 29. w, F, LATER fi,704,518

GAS AND LIQUID CONTACT APPARATUS Filed April 30, 19261 a Sheets-Sheet 4 v March 5, 1929. w. F. SLATER GAS AND LIQUID CONTACTw APPARATUS Filed April 30, 1926 shets-sheei 5 1 lI/I/III/I [III/II IIIIIIIIII/IIIII/IIIII March 5, 1929. w, F, SLATER 1,704,518

- GAS AND LIQUID CONTACT APPARATUS Filed April 30, 1926 6 Sheets-Sheet 6 6 6-6, Figure 5.

to matic view of the arrangement illustrated in Patented 5, 1929.

f 1304,5133. UNITED?- STATES IPATENT' oer-ice.

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Application filed April 30,'1926, Serial No. 105,685, and in Great Britain May 25, 1925.

V This invention relates to apparatus for hi fecting intimate contact between liquids and gases as, for example, is used for the extraction of'ammonia and other impurities found in coal gas, comprising a series of superposed chambers each furnished with a rotary spraying device of approximately the fulldepth of the chamber, the series of Sprayers being 1 mounted on a common vertical shaft extending through the chambers and the gas to be treated flowing upwardly through the series of chambers whilst the liquid fiows in the opposite direction;

According to the invention each, chamber having an upstanding flange or 1i to allow of the accumulation of a layer 0 liquid on,

the'bottom of the chamber to supply the opening or openings.

forbringingthe gases into intimate contact with the sprayed liquid. A To enable the invention to be fully understood I will describe it by reference to the accompanying drawings, in which Figure 1 is asectional elevation of a por- 'ion'ofapparatus constructed in accordance with my invention for eflecting intimate contact between liquids and gases.

2-2, Figure 1.7 r

- Figure 3 is a view similar to Figure 1, illustrating a modification and i a Figure 4 is -a horizontal section onthe line 4.--4, Figure 3. V v Figure 5 is a view-"in horizontal section,

illustrating afurther modification and Figure 6' 'is aavertical section on the line Figure? is a sectional perspective diagram- Figures 5 and 6.

Figure 8 1s a sectional perspective diagrammatic vieweof another-modificatlon and is provided with an opening or openings in its sprayer therein and with a baflle to cut ofi the sprayed liquid from passing through the Figure 2 is a horizontal section on the line Figure 9 is a sectional plan view of the same. I

rotary spraying device 6 for the liquid and of approxlmately the full'depth of the chamber.

lln the drawings, the devices I) each comprise a basket peripherally perforated but any other convenient construction may be employed. The series of Sprayers bis mount ed upon the common vertical shaft 0 extendmg through the chambers. The gas to be treated enters the lowermost chamber, not shown, of the series, and passes up through a preferably segmental opening d in the floor e of the superposed chamber into the latter,

this segmental form having the opposed sides d arranged approximately tangential to the peripheries of the sprayers b. f, f are the flanges or lips with which the segmental open.- ing (1 is furnished so as to allow of the accumulation of alayer of liquid. in the bottom of the chamber and g is the baflle provided at its inner end so as to cut off the sprayed liquid from the said opening. The gas which passes up through this opening 01 is then de- ,.flected to'both sides asindicated by the solid arrows and passes around-the chamber in opposite directidns cominginto intimate contact with the sprayed liquid and eventually passes out through a second segmental open-' 111g ddlametrically opposite, or approximate- 1y diametrically opposite to the first segmen:

;tal.open1ng,into' the next superposed chem her-a. It will thus be seen that "the liquid, which passes down through-the successivechambers in the ordinary way and is discharged from the Sprayers in each chamber is brought into very intimate' c ontact with the gas. which passes up through the series of K chambers in themanner above described. To further increase the path of the gas, a series of vertical baflles h," lz may be provided. within 1051 each chamber, projecting from the bottom of the chamber and depending from the-top 7 thereof, respectively, .so'that the gas is caused passing through the inlet 03, is deflected by a vertical bafie i so as to pass in one direction only around the chamber as indicated by the solid arrows and is discharged into the next superposed chamber a through an opening 03 which is displaced relatively to the first mentioned inlet opening, that is to say, to one side thereof in plan view as indicated in Figure L In the modified construction illustrated in Figures 5 to 9 the gas openings in the series of superposed chambers are located immediately above one another, the gas passing completely around the chambers as in the construction illustrated inFigures 3 and l, and being prevented from passing directly from opening to opening by inclined or curved deflectors or bafies j in addition to the bafiles' 9 between the superposed openings d and which cause the gas entering one chamber a to pass around the said chamber, and when it has completed its circular course, defleeting it into the inlet to the nextsuperposed chamber a. The deflectors shown in Figures 5 to 7 are shaped with their surfaces at allpoints parallel with lines tangential to the peripheries of the sprayers, b and coinciding with the direction of the spray therefrom.

' In the construction illustrated in Figures 5 to 7 the baflies y are of curved form and cast or made integral with the chambers, whilst in the construction illustrated in Figures 8 and 9 the baffles j are made of flat plates secured to the flanges or dams f. In these latter figures the openings (2 are shown as being of substantially rectangular form.

The gas'may be caused to passeither with or against the spray by reversing the angle of the bafiie plate. V

In the constructionillustrated in Figures 10, 11 and 12, each of the superposed'cham bers a is furnished with two openings 0), al

of segmental shape, as above described, and the entering gas is caused to pass either completely around each chamber as in the con: struction illustrated in Figures 5 to 9, or in difierent directionshalf-way around the same,

as in the construction illustrated in Figures 1 and 2. Where the gas is required to pass completely. around each chamber, the additional openings 0? in each chamber is blocked by a plate k, Figs. 10 and 11 and baffle plates Z similar to the baffle plates 5; described with reference to the construction illustrated in Figures 5 to 9 are made use of, in conjunction with the openings d, to cause the gas to pursue the correct path. If the apparatus is to function so that the gas passes in different 'directions half-way round each chamber, one of the openings in each chamber is closed by a; plate such as k, that is to say, the right-hand opening al in one chamber, the left-hand opening (Z of the next, and so forth, so that the gas pursues a zig-zag or tortuous course through the series of chambers.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, ll declare that what I claim is f l. The combination of a vertical scrubber shell, a vertical shaft extending axially therethrough, a bafie structure in said shell arranged to produce in cooperation with the shell, a substantially continuous spiral gas passageway from the bottom to the top of the shell, and a rotary sprayer structure carried by said shaft and forming part of the balile structure. p

2. In a gas scrubber, the combination of a vertical shell, a shaft extending axially therethrough, a plurality of substantially horizontal partitions sub-dividing said shell into spray chambers, each partition being provided with an ofi-set portion which registers with the next higher partition, and rotatable sprayer elements, one for each chamber,

mountedon said shaft,said partitions and their oil-set portions cooperating with the sprayer elements and shell to formv a contin- Y spiral gas passageway ments, one foreach chamber, mounts on said shaft, said partitions and their elf-set portions cooperating with the sprayer elements and shell to form a continuous approximately spiral gagpassagewa'y through the scrubber. and damsgone located approximately at the junction of the old-set portion ofea'ch partition with the next higher partition.

f 4. Apparatus for efiecting intimatecontact betwen liquid-and gases flowing inopposi'te directions therethrough, comprising a shell containing a series of superposed chambers, a circular baffle obstructing the central portion of each chamber and of approximately the depth of each chamber, a rotary spraying device forming art of each bafie, a vertical shaft extending through the, chambers and bafiles and carrying said spraying devices, the'fioor of each chamber having an opening therein, said openings and bafflesbeing so arranged that the gas in passing through a chamber from one opening to the next, is constrained to flow around the bathe in that chamber, and means for preventing liquid on any floor of the apparatus from flowing through any-of said openingsto the chamber immediately below that floor.

5. An apparatus as claimed in claim 4, 130

including auxiliary baflles arranged in the chambers for preventing the sprayed liquid from spraying through said openings.

6. Apparatus as claimed in claim 4, Wherein each of said openings is of a shape having four'sides, a baflle plate coinciding with one of said sides-for cutting off the sprayed liquid from the opening whilst the two opposite sides connected to the sidewhich coincides With the baflle plate, are approximately tangential to the peripheries of the circular bafiles.

7. Apparatus as claimed in claim 4,'ineludingan auxiliary baflie extending across each chamber, all of said baflies and openings being so disposed that the gas will flow in one direction only around each chamber before passing upwardly through an opening to the chamber immediately above.

8. Apparatus as claimed in claim 4, including auxiliary baflles arranged in the chambers, each auxiliary baffle extending across one of the chambers and functioning to deflect gas upwardly through one of the openings into the chamber immediately above, said auxiliary baflles being of such shape and so disposed with reference to the openings that the gas deflected by the auxiliary baffles is wholly under the action of the spray Without the said auxiliary bafilc-s impeding the latter.

WALTER FRENCH SLATER. 

